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Examples

  • The fine-textured, clayey soils have smectitic or carbonatic mineralogy.

    Ecoregions of Mississippi (EPA) 2008

  • When van der Pluijm and colleagues analysed samples of rock from an actively creeping segment they found a thin layer of smectitic clay, less than 100 nanometers thick, that acts something like grease on ball bearings.

    Daily News & Analysis 2010

  • Instead, they found that fractured rock surfaces were coated with a thin layer of smectitic clay, less than

    innovations-report 2010

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